{"version":"1.0","provider_name":"SprintpcbGroup","provider_url":"https:\/\/www.sprintpcbgroup.com\/ar","title":"DC\/DC Converter PCB Failures From Copper Thickness to Solder Voids: What Heavy Copper Suppliers Never Tell You Upfront","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"1181Z5qjL1\"><a href=\"https:\/\/www.sprintpcbgroup.com\/ar\/blogs\/dc-dc-converter-pcb-heavy-copper-supplier-failures\/\">DC\/DC Converter PCB Failures From Copper Thickness to Solder Voids: What Heavy Copper Suppliers Never Tell You Upfront<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.sprintpcbgroup.com\/ar\/blogs\/dc-dc-converter-pcb-heavy-copper-supplier-failures\/embed\/#?secret=1181Z5qjL1\" width=\"600\" height=\"338\" title=\"&#8220;DC\/DC Converter PCB Failures From Copper Thickness to Solder Voids: What Heavy Copper Suppliers Never Tell You Upfront&#8221; &#8212; SprintpcbGroup\" data-secret=\"1181Z5qjL1\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.sprintpcbgroup.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>","thumbnail_url":"https:\/\/www.sprintpcbgroup.com\/wp-content\/uploads\/2026\/08\/dc-dc-converter-pcb-engineering-production.webp","thumbnail_width":600,"thumbnail_height":400,"description":"On a DC\/DC Converter PCB, the supplier's process discipline matters far more than the price on the quote. A 4oz copper design for a 48V-to-12V, 60A buck converter once came back with inner-layer copper thickness off by more than 15%, sampling traces shrunk from 0.5mm to 0.35mm, and the board scorching to 110\u00b0C near the inductor after thirty minutes at full load. Drawing on that failure and many others \u2014 via-plugging voids under power pads, warpage from mixed heavy\/thin copper lamination, solder fatigue from CTE mismatch \u2014 this field report explains why etch control, line-width compensation, and via plating matter more than the copper-thickness number on a spec sheet."}